How many movies have Denis O'Dea and J.G. Devlin acted in together?

They have worked on 3 movies together! Their first movie together was The Rising of the Moon (1957) while their highest rated movie together was I Captured the King of the Leprechauns (1959). They have not worked together since Darby O'Gill and the Little People (1959). They are most known for their family films together.